Part III: Appendixes
System Resources
221
The following table lists the computer’s DMA channel
assignments.
Input/output port address assignments
The CPU accesses input/output devices, such as modems, by
reading from them or writing to them. Each command to read or
write must specify the address (in memory) for the port. Each
device that communicates with the CPU must have a unique I/O
port address.
The following table lists the device names and their assigned I/O
port addresses for the computer.
DMA
Use
Notes
0
Sound system
Choice for sound system
1
Sound system
Choice for ECP
2
3.5-inch diskette drive
3
ECP
Choice for sound system, ECP
4
Cascade from DMA channel 1
5
Reserved
6
Reserved
7
Reserved
Port address
(h)
Device/function
Notes
000-01F
82C37: DMA controller 1
020-03F
82C59: PIC 1
040-05F
82C54: timer
Summary of Contents for 8000 series
Page 21: ...xxi ...
Page 22: ......
Page 43: ...Part I Getting to Know Your Computer To Begin When and how to turn off the computer 19 ...
Page 107: ...Part I Getting to Know Your Computer Using Drives Playing a DVD video 83 ...
Page 174: ......
Page 176: ...Chapter Using TSETUP 153 Using Hardware Setup 154 ...
Page 210: ...Chapter Industry standard architecture 187 System management 189 Security management 196 ...
Page 224: ......
Page 226: ...Appendix Built in features 203 Optional accessories and devices 211 Specifications 214 ...
Page 239: ...Part III Appendixes Features and Specifications 215 ...
Page 240: ...Appendix ...
Page 249: ...Part III Appendixes System Resources 225 ...
Page 250: ...Appendix ...